Rory, Ruaidhrí, Roderic: variants of an Irish name which means "red-haired"

Rory O'Connor, or Ruaidhrí Ua Conchubair: High King of Ireland when Henry II came from the East; he was the last native King of Ireland, hence "Rory end" → according to the Black Book of Howth, Sir Amory (or almeric) Tristram dies fighting against Rory O'Connor in Connacht